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Development of a centrifugal sprayer-based solar HDH desalination unit with a variety of sprinkler rotational speeds and droplet slot distributions

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  • Khalaf-Allah, Reda A.
  • Abdelaziz, Gamal B.
  • Kandel, Mohamed G.
  • Easa, Ammar S.

Abstract

Water is one of the most important natural components of all life. Concerning the issue of water scarcity, desalination is a suitable solution to remove salts from salty water to increase freshwater resources. The present work experimentally analyses a Solar HDH system performance using a centrifugal humidifier at different rotating sprinkle speeds with various distributions of droplet slots. The effect of droplet slot distributions, rotating sprinkler speed, airflow rate, and feedwater flow rate on freshwater productivity are examined. The findings demonstrated that increasing the rotating sprinkler speed from 600 rpm to 1000 rpm increased about three times the daily freshwater productivity. Also, the maximum daily freshwater productivity was found at the specimen of one longitudinal line having 37 droplet slots. Increasing feedwater flow rate enhances hourly productivity by about 71% with 0.051 kg/s, 42% with 0.047 kg/s, 39% with 0.039 kg/s, and about 15% with 0.031 kg/s of feed water. Furthermore, at an airflow rate of about 0.044 kg/s, the highest hourly/daily productivity is 185%/139% higher than at 0.019 kg/s.

Suggested Citation

  • Khalaf-Allah, Reda A. & Abdelaziz, Gamal B. & Kandel, Mohamed G. & Easa, Ammar S., 2022. "Development of a centrifugal sprayer-based solar HDH desalination unit with a variety of sprinkler rotational speeds and droplet slot distributions," Renewable Energy, Elsevier, vol. 190(C), pages 1041-1054.
    • Handle: RePEc:eee:renene:v:190:y:2022:i:c:p:1041-1054
    DOI: 10.1016/j.renene.2022.04.019
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    References listed on IDEAS

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    1. Kabeel, A.E. & Hamed, Mofreh H. & Omara, Z.M. & Sharshir, S.W., 2014. "Experimental study of a humidification-dehumidification solar technique by natural and forced air circulation," Energy, Elsevier, vol. 68(C), pages 218-228.
    2. El-Said, Emad M.S. & Dahab, Mohamed A. & Omara, M. & Abdelaziz, Gamal B., 2021. "Solar desalination unit coupled with a novel humidifier," Renewable Energy, Elsevier, vol. 180(C), pages 297-312.
    3. Mohamed, A.S.A. & Ahmed, M. Salem & Shahdy, Abanob.G., 2020. "Theoretical and experimental study of a seawater desalination system based on humidification-dehumidification technique," Renewable Energy, Elsevier, vol. 152(C), pages 823-834.
    4. Eid, Eldesouki I. & Khalaf-Allah, Reda A. & Soliman, Ahmed M. & Easa, Ammar S., 2019. "Performance of a beta Stirling refrigerator with tubular evaporator and condenser having inserted twisted tapes and driven by a solar energy heat engine," Renewable Energy, Elsevier, vol. 135(C), pages 1314-1326.
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    1. Tashtoush, Bourhan & Alyahya, Wa'ed & Al Ghadi, Malak & Al-Omari, Jamal & Morosuk, Tatiana, 2023. "Renewable energy integration in water desalination: State-of-the-art review and comparative analysis," Applied Energy, Elsevier, vol. 352(C).

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